ChirpStack Default Login Scanner

ChirpStack is commonly used in networks that utilize LoRaWAN technology for IoT applications. It is used by organizations to manage LoRaWAN networks, providing a solution for the network and application layers of the LoRaWAN specification. Primarily utilized in IoT scenarios, ChirpStack facilitates the connection of various devices to a central network server. It is deployed by businesses and service providers to enable efficient and effective IoT operations. With features to configure and monitor IoT devices, ChirpStack aids in the seamless operation of wireless devices on LoRaWAN protocols.

The detection focuses on identifying setups of ChirpStack that use default login credentials. Default credentials pose a significant risk as they allow unauthorized access to sensitive systems. This vulnerability is prevalent in fresh installations where the admin/admin username and password combination is retained. Detecting this vulnerability is crucial to ensure that access controls are properly implemented and unauthorized access is mitigated. Exploring login entry points, this scanner verifies whether such default credentials are left unchanged, potentially exposing critical systems.

Technical details of this vulnerability involve the endpoint `/api.InternalService/Login` where the default login process is conducted. The scanner checks for successful login responses using the proto buffer encoded credentials via the POST method. If successful, this indicates that the default admin username and password have not been changed. The scanner analyzes HTTP responses and targets the content type to ascertain the usage of default credentials. It focuses on systems that return application/grpc-web-text+proto content type upon a login attempt, coupled with a 200 status code.

If malicious entities exploit this vulnerability, they can gain administrative access to the ChirpStack management console. This could lead to unauthorized control over IoT network configurations, potentially causing disruptions. An attacker with access could manipulate or steal sensitive information from connected devices, or introduce malicious configurations. The stakes are high, particularly if these systems control critical infrastructure or commercial IoT deployments. Consequently, it can lead to reputational damage and operational downtimes.

REFERENCES

• https://www.chirpstack.io/docs/chirpstack/use/login.html